I assume: You are looking ideal IO latency value in ms.
Just for your info..VMware offers one cool feature SIOC (Storage IO control), which throttles the the LUN when there is IO contention, SIOC determines IO contention based on SIOC IO threshold(i.e. IO latency) & if data-store crosses the IO latency, SIOC starts throttling the LUN (i.e. distribute the IOPS based on IOPS shares assigned to each VM:::From UI or API you can assign IOPS shares to particular VM which is residing on datastore where SIOC is enabled)
Best practices to set this latency for SIOC is as follows:
- For FC storage the recommended latency threshold is 20 – 30 MS
- For SAS storage the recommended latency threshold is 20 – 30 MS
- For SATA storage the recommended latency threshold is 30 – 50 MS
- For SSD storage the recommended latency threshold is 15 – 20 MS
Learn more about SIOC here: Storage IO Control, the movie - Yellow Bricks & Storage I/O Control, the basics
There is another cool feature VMware offers is SDRS which can balance the IO load across cluster of datastores. (Read more :An introduction to Storage DRS & :Death to false myths: Storage IO Control = SDRS IO load balancing
IOPS capacity depends on type of storage you are using: ie.FC(VMFS), iSCSI, NFS, local disks, vSAN, SSDs etc. IOPS values will be given by the storage vendors the way we get bike mileage values from bike vendors.
Hope this helps
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Thanks & Regards
Vikas, VCP70, MCTS on AD, SCJP6.0, VCF, vSphere with Tanzu specialist.
https://vThinkBeyondVM.com/about
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Disclaimer: Any views or opinions expressed here are strictly my own. I am solely responsible for all content published here. Content published here is not read, reviewed or approved in advance by VMware and does not necessarily represent or reflect the views or opinions of VMware.
